diff --git a/go/gogo.cc b/go/gogo.cc
index 5dbe29d..adc8e8a 100644
--- a/go/gogo.cc
+++ b/go/gogo.cc
@@ -2498,6 +2498,8 @@
     case Type::TYPE_NAMED:
       {
 	Named_type* nt = t->named_type();
+	if (nt->is_alias())
+	  return TRAVERSE_CONTINUE;
 	if (t->needs_specific_type_functions(this->gogo_))
 	  t->type_functions(this->gogo_, nt, NULL, NULL, &hash_fn, &equal_fn);